【摘要】 应用垂直聚丙烯统胺凝胶电泳和数字成像扫描系统对42日龄的泰和鸡和AA（Arbor Aeres）肉鸡血清酯酶的多态性进行了分析。两种鸡的血清醋酶主要包括2个区域：Es- l和Es- 2。泰和鸡的Es- 1有4种类型：A型（A带出现，频率0．4575）、AB型（A带13带都出现．频率0．5415）、B型（B带出现，频率0．5365）和O型（A带B带均无，即无Es- 1，频率0．0732）。AA鸡的Es- 1有3种类型：A型（频率0．1667）、B型（频率0．5557）和O型（频率0．1667）．两种鸡Es- 2区条带出现的频率均为1。AA鸡Es- 2的平均灰度（AA鸡vs泰和鸡201±15vsl74±14，p＝0．029）总灰度（454079±669l0vs378968±66751，p＝0．033）和净灰度（209517±4907vsl57873±24214，p＝0．045）均显著高于泰和鸡，但Es- 1在品种间没有差异。两种鸡的Es- 2的平均灰度和净灰度都显著高于Es- 1（泰和鸡174±14vs150±10，p= 0．004；3432±29043vs157873±24214，p＝0．001。AA鸡202±15vsl55±20，p＝0．003；209517±4907vsll7776±58087，p＝0．050），但Es- 2的总灰度值与Es- l的总灰度之间两种鸡均没有差异。更多还原

【Abstract】 Taihe ehicken is a Chinese indigenous breed with small body size, black skin and bone as well as silky white festher. The serum esterase isozyme polymorphism in 42-day-old Taiehe and Arbor Acres (AA) chickens were analyzed by verticsl polyacry-lamide gel electrophoresis and digital science image analysis soffware. Esterase phenotypes of the both chickens included 2 region; Es-l and ES-2. There were 4 types of Es-l in Taihe Chicken: type A (A band and, frepuency 0. 4878),type AB(A band and B band, frequency 0. 3415),type B(B band,frequency 0. 5365)and type O(no A band and B band, i. e. no Es-l,frequency 0. 0732) . There were 3 types of Es-l in AA broiler rtype A(frequency 0. 1667) ,type B(fre- puency 0. 5557)and type O (frequency 0. 1667). ES-2 band appear frequency were 1 in both varieties. ES-2 of AA broiler significandy higher than Taihe chick in scan mean imensi-ty of (201 ±15vs ±174 ±14, p = 0. 029), sum intensity (454079± 66910vs378968±66781,p = 0. 033 )and net intensitry(209817 ±4907vs 157873 ±24214 , p = 0. 045 ); but there were no differ- ence in Es-l in the two varieties, Mean intensity and net intensity of ES-2 were significantly higher than that of Es-l in both varieties (Taihe 174±14vsl50±10, p = 0. 004; 3432 ±29043vsl57873 ±24214 ,p = 0. 001. AA broiler 201 ±15vs155 ± 20,p ; 0. 003 ;209817±4907vsl17776±58087 ,p = 0. 050) ;but there was no difference between sum intensitr of ES-2 and Es-l in both varieties.更多还原